DriversRazer's drivers have always been known to be some of the best because they enable the user to tweak every aspect of the mouse. Some of the things that makes a Razer driver stand out from the crowd is the fact that you can control acceleration. Besides from that you can control the horizontal sensitivity and vertical sensitivity separately. Another good feature is the on-the-fly sensitivity control which means that you can alter the sensitivity in-game without having to exit the program and adjust the Windows sensitivity setting. The Razer drivers have all the features you need and then some you might need, depending on your style of play or the game you play.
The standard control window in the driver is quite simple. It houses all of the every day things, and the stuff you change on a regular basis.
The button assignment is nice and relatively simple with the Razer driver suite. Every button on the mouse can be assigned to a lot of different things right from the standard Windows button 4/5 (Back / Forward) to macros and advanced functions where one button can act as both on-the-fly sensitivity button and some other function or keyboard bind.
Besides from controlling the master sensitivity you can also control the polling rate of the mouse and the DPI setting of the sensor. It is best to leave the DPI settings at the standard value and then instead use a relatively lower sensitivity because then you will avoid some negative acceleration. The only scenario where a DPI change is necessary is when you can't get the sensitivity down to the level you want. This is highly unlikely to be the case with the Razer DeathAdder because the driver offers two sensitivity controls each capable of taking the sensitivity down to 5% of its original value. I tried doing this and I had to use almost 16x30cm to make the cursor go from one edge of the screen to the other (using 1280x1024 resolution and with zero windows acceleration via both the Razer driver and the Razer acceleration removal tool), so the driver level implementation of the sensitivity control is enough to get the sensitivity down to the extreme.
Another unusual feature implemented in the driver is the light control which allows the user to disable all or one of the internal lights.
On this advanced driver tab you can control the on-the-fly behavior scroll-speed and double click speed.
As with almost any driver today, Razer lets the user control both the Windows sensitivity and a master sensitivity. Besides that you have full control of the Windows acceleration from the Razer driver. This is nice because then you won't have to install a 3rd party acceleration remover such as the Razor acceleration remover or the CPL mousefix.
Above you can see probably the least used driver control in the Razer driver, the separate X-axis and Y-axis control. This is only used by a minority of gamers because it makes the mouse feel less balanced.
Overall I really like the Razer drivers, they have an intuitive graphical user interface and are feature rich compared to those made by other mouse producers.